package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@Slf4j
@RestController("userDishController")
@RequestMapping("/user/dish")
@Api(tags = "C端-菜品浏览接口")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate redisTemplate;
    @GetMapping("/list")
    @ApiOperation(value = "根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId){
        //构造redis缓存key
        String key = "dish_" + categoryId;
        //查询redis缓存是否存在菜品数据
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);

        if (list != null && !list.isEmpty()){
            //如果存在，直接返回，无需查询数据库
            return Result.success(list);
        }

        log.info("根据分类id查询菜品:{}",categoryId);
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);//1起售 0停售

        //如果不存在，查询数据库，将查询到的数据缓存到redis
        list = dishService.listWithFlavor(dish);
        redisTemplate.opsForValue().set(key,list);
        //返回结果
        return Result.success(list);
    }
}
